niconico scale changer is a Chrome add-on developed by ないとろ that allows users to customize the height and width of videos and comment sections on NicoNico Douga.

With this add-on, users are not limited to the default display sizes provided by the website. Instead, they can freely adjust the size of videos and comments according to their preferences. Whether you prefer a larger video player or a more compact comment section, niconico scale changer gives you the flexibility to customize the layout of NicoNico Douga to suit your needs.

This add-on is a great tool for NicoNico Douga users who want to have a more personalized viewing experience. By allowing users to change the size of videos and comment sections, niconico scale changer enhances the usability and customization options on the website.